Results 41 to 50 of about 123,258 (356)

Trifluoroethanol Promoted Castagnoli–Cushman Cycloadditions of Imines with Homophthalic Anhydride

Molecules, 2022
Lactams are essential compounds in medicinal chemistry and key intermediates in the synthesis of natural products. The Castagnoli–Cushman reaction (CCR) of homophthalic anhydride with imines is an exciting method for accessing cyclic densely substituted ...
Thibault Bayles, Catherine Guillou
doaj   +1 more source

Bicarbonate Resensitization of Methicillin-Resistant Staphylococcus aureus to β-Lactam Antibiotics. [PDF]

, 2019
Endovascular infections caused by methicillin-resistant Staphylococcus aureus (MRSA) are a major health care concern, especially infective endocarditis (IE).
Abdelhady, Wessam, Bayer, Arnold S, Chambers, Henry F, Ersoy, Selvi C, Li, Liang, Xiong, Yan Q   +5 more
core  

Scope and Predictive Genetic/Phenotypic Signatures of Bicarbonate (NaHCO3) Responsiveness and β-Lactam Sensitization in Methicillin-Resistant Staphylococcus aureus. [PDF]

, 2020
Addition of sodium bicarbonate (NaHCO3) to standard antimicrobial susceptibility testing medium reveals certain methicillin-resistant Staphylococcus aureus (MRSA) strains to be highly susceptible to β-lactams.
Bayer, Arnold S, Chambers, Henry F, Chen, Liang, Ersoy, Selvi C, Fowler, Vance G, Kreiswirth, Barry, Li, Liang, Mediavilla, Jose, Milan, Vanessa T, Otmishi, Mariam, Pak, Youngju, Proctor, Richard A, Xiong, Yan Q   +12 more
core   +1 more source

SIAIP position paper: provocation challenge to antibiotics and non-steroidal anti-inflammatory drugs in children [PDF]

, 2018
Drug hypersensitivity reactions (DHRs) in childhood are mainly caused by betalactam or non-betalactam antibiotics, and non-steroidal anti-inflammatory drugs (NSAIDs).
Arasi, Stefania, Barni, Simona, Bottau, Paolo, Caffarelli, Carlo, Caimmi, Davide, Caimmi, Silvia, Cardinale, Fabio, Comberiati, Pasquale, Crisafulli, SEBASTIANO GIUSEPPE, Di Mauro, Dora, Diaferio, Lucia, Duse, Marzia, Franceschini, Fabrizio, Liotti, Lucia, Marseglia, Gianluigi, Mastrorilli, Carla, Mori, Francesca, Paravati, Francesco, Pelosi, Umberto, Saretta, Francesca   +19 more
core   +1 more source

Natural Products Inspired Scaffold Diversification Leads to Unnatural Molecular Warhead and Covalent Strategy to Modulating Protein Function through Electrophilic Bromine Transfer

Advanced Science, EarlyView.
We report a new thiolate‐reactive α,α‐gem‐dibromo lactam warhead that activates transcription factor Nrf2 and demonstrates anti‐inflammatory activities, which have implications in cancer, neurodegeneration, and cardiovascular diseases. RNA‐seq illuminated detailed transcriptional profiles, and chemical reactions with cysteine‐containing compounds ...
Beau R. Brummel, Sofia Kokkaliari, Qiwen Gao, Jinjing Chen, Larissa Costa de Almeida, Srinivasarao Tenneti, Derek A. Leas, Eli Levit, Lewis S. Alexander, Khalil A. Abboud, Pingrong Wei, Michael D. Cameron, James R. Rocca, Ranjala Ratnayake, Donna D. Zhang, Hendrik Luesch, Robert W. Huigens III   +16 more
wiley   +1 more source

Strategies Toward Accessing Enantioenriched (Hetero)Benzo‐Fused 5‐ and 6‐ Membered Rings via Intermolecular Carbometalation

Angewandte Chemie, EarlyView.
The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans, Armaan Grewal, Xavier Abel‐Snape, Mark Lautens   +3 more
wiley   +2 more sources

Synthesis of Novel N-Sulfonyl Monocyclic β-Lactams as Potential Antibacterial Agents

Molecules, 2006
New cis monocyclic β-lactams were synthesized by [2+2] Staudinger cycloaddition reactions of the imine (3,4-dimethoxybenzylidene)-(4-methoxyphenyl)- amine and ketenes derived from different acyl chlorides and Et3N.
Maaroof Zarei, Aliasghar Jarrahpour
doaj   +1 more source

Microwave-induced Conversion of Electromagnetic Energy into Heat Energy in Different Solvents: Synthesis of β-lactams

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2021
In this work, the stereospecific synthesis of optically active cis β-lactams under diverse microwave-induced conditions using diverse solvents was reported.
Aparna Das, Ram Naresh Yadav, Bimal Krishna Banik   +2 more
doaj   +1 more source

Targeting Peptostreptococcus anaerobius with an Iron‐Based Nanozyme Reverses Ferroptosis Resistance and Enhances Antitumor Immunity in Colorectal Cancer

Advanced Science, EarlyView.
An iron‐based nanozyme selectively eliminates intratumoral P. anaerobius while catalytically generating ROS to induce ferroptosis, synergistically suppressing colorectal cancer growth and activating anti‐tumor immunity through immunogenic cell death. ABSTRACT The intratumoral microbiota is a critical determinant of therapeutic outcomes in colorectal ...
Yinghao Cao, Jun Wang, Hanwenchen Wang, Xiang Sun, Fang Fang, Shiying Li, Jianping Liu, Changrong Shi, Pengyuan Qi, Jianhua Zou, Xiaoyuan Chen, Kailin Cai   +11 more
wiley   +1 more source

A Circular and Tacticity‐Independent Crystalline Mono‐Substituted Nylon‐6 Platform: Unexpected Large Positional Effects on Crystallizability and Performance

Angewandte Chemie, EarlyView.
Methyl substitution positions on the nylon‐6 backbone markedly affect crystallizability, thermomechanical properties, and recyclability of the resulting atactic nylon‐6 variants. While γ‐methyl substitution gives an amorphous nylon, all other four methyl‐substitution positions (α, β, δ, and ε) afford, unexpectedly, crystalline nylons, showing tacticity‐
Jun‐Jie Tian, Jiyun Nam, Lili Wang, Andrea L. Baer, Ruirui Li, Maëlle T. Gace, Wei‐Feng Zheng, Clarissa Lincoln, Nicholas A. Rorrer, Eugene Y.‐X. Chen   +9 more
wiley   +2 more sources